Examples of com.google.gwt.dev.jjs.ast.JCaseStatement

com.google.gwt.dev.jjs.ast.JCaseStatement
Java case statement.

        continue;
      }


      for (int permutationId : permutations) {
        // case 33:
        switchBody.addStmt(new JCaseStatement(info,
            program.getLiteralInt(permutationId)));
      }


      // return new FooImpl();
      JReturnStatement ret = new JReturnStatement(info, instantiation);

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      if (expression != null && x.constantExpression.resolvedType.isEnum()) {
        // TODO: propagate enum information?
        assert (expression instanceof JFieldRef);
        JFieldRef fieldRef = (JFieldRef) expression;
        JEnumField field = (JEnumField) fieldRef.getField();
        return new JCaseStatement(info, program.getLiteralInt(field.ordinal()));
      } else {
        return new JCaseStatement(info, (JLiteral) expression);
      }
    }

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          assert x.constantExpression.resolvedType.isEnum();
          NameReference reference = (NameReference) x.constantExpression;
          FieldBinding field = reference.fieldBinding();
          caseLiteral = JIntLiteral.get(field.original().id);
        }
        push(new JCaseStatement(info, caseLiteral));
      } catch (Throwable e) {
        throw translateException(x, e);
      }
    }

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    private boolean hasNoDefaultCase(JSwitchStatement x) {
      JBlock body = x.getBody();
      boolean inDefault = false;
      for (JStatement statement : body.getStatements()) {
        if (statement instanceof JCaseStatement) {
          JCaseStatement caseStmt = (JCaseStatement) statement;
          if (caseStmt.getExpr() == null) {
            inDefault = true;
          }
        } else if (isUnconditionalUnlabeledBreak(statement)) {
          inDefault = false;
        } else {

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         *
         * switch(i) { case 1: a(); b(); break; default: c(); d(); }
         *
         * becomes if (i == 1) { a(); b(); } else { c(); d(); }
         */
        JCaseStatement caseStatement = (JCaseStatement) body.getStatements().get(0);
        JStatement statement = body.getStatements().get(1);


        FindBreakContinueStatementsVisitor visitor = new FindBreakContinueStatementsVisitor();
        visitor.accept(statement);
        if (visitor.hasBreakContinueStatements()) {
          // Cannot optimize.
          return;
        }


        if (caseStatement.getExpr() != null) {
          // Create an if statement equivalent to the single-case switch.
          JBinaryOperation compareOperation =
              new JBinaryOperation(x.getSourceInfo(), program.getTypePrimitiveBoolean(),
                  JBinaryOperator.EQ, x.getExpr(), caseStatement.getExpr());
          JBlock block = new JBlock(x.getSourceInfo());
          block.addStmt(statement);
          JIfStatement ifStatement =
              new JIfStatement(x.getSourceInfo(), compareOperation, block, null);
          replaceMe(ifStatement, ctx);

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        continue;
      }


      for (int permutationId : permutations) {
        // case 33:
        switchBody.addStmt(new JCaseStatement(info, program.getLiteralInt(permutationId)));
      }


      // return new FooImpl();
      JReturnStatement ret = new JReturnStatement(info, instantiation);
      switchBody.addStmt(ret);

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    }


    JStatement processStatement(CaseStatement x) {
      SourceInfo info = makeSourceInfo(x);
      JExpression expression = dispProcessExpression(x.constantExpression);
      return new JCaseStatement(program, info, (JLiteral) expression);
    }

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    private boolean hasNoDefaultCase(JSwitchStatement x) {
      JBlock body = x.getBody();
      boolean inDefault = false;
      for (JStatement statement : body.getStatements()) {
        if (statement instanceof JCaseStatement) {
          JCaseStatement caseStmt = (JCaseStatement) statement;
          if (caseStmt.getExpr() == null) {
            inDefault = true;
          }
        } else if (isUnconditionalUnlabeledBreak(statement)) {
          inDefault = false;
        } else {

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         * 
         * switch(i) { case 1: a(); b(); break; default: c(); d(); }
         * 
         * becomes if (i == 1) { a(); b(); } else { c(); d(); }
         */
        JCaseStatement caseStatement = (JCaseStatement) body.getStatements().get(
            0);
        JStatement statement = body.getStatements().get(1);


        FindBreakContinueStatementsVisitor visitor = new FindBreakContinueStatementsVisitor();
        visitor.accept(statement);
        if (visitor.hasBreakContinueStatements()) {
          // Cannot optimize.
          return;
        }


        if (caseStatement.getExpr() != null) {
          // Create an if statement equivalent to the single-case switch.
          JBinaryOperation compareOperation = new JBinaryOperation(x.getSourceInfo(),
              program.getTypePrimitiveBoolean(), JBinaryOperator.EQ,
              x.getExpr(), caseStatement.getExpr());
          JBlock block = new JBlock(x.getSourceInfo());
          block.addStmt(statement);
          JIfStatement ifStatement = new JIfStatement(x.getSourceInfo(),
              compareOperation, block, null);
          ctx.replaceMe(ifStatement);

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      if (expression != null && x.constantExpression.resolvedType.isEnum()) {
        // TODO: propagate enum information?
        assert (expression instanceof JFieldRef);
        JFieldRef fieldRef = (JFieldRef) expression;
        JEnumField field = (JEnumField) fieldRef.getField();
        return new JCaseStatement(info, program.getLiteralInt(field.ordinal()));
      } else {
        return new JCaseStatement(info, (JLiteral) expression);
      }
    }

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